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js_defer_disabled_filter.h
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1 /*
2  * Copyright 2011 Google Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http:///www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
18 
19 #ifndef NET_INSTAWEB_REWRITER_PUBLIC_JS_DEFER_DISABLED_FILTER_H_
20 #define NET_INSTAWEB_REWRITER_PUBLIC_JS_DEFER_DISABLED_FILTER_H_
21 
24 #include "pagespeed/kernel/base/basictypes.h"
25 #include "pagespeed/kernel/base/string.h"
26 #include "pagespeed/kernel/html/html_element.h"
27 #include "pagespeed/kernel/html/html_filter.h"
28 
29 namespace net_instaweb {
30 
31 class Statistics;
32 
38  public:
39  explicit JsDeferDisabledFilter(RewriteDriver* driver);
40  virtual ~JsDeferDisabledFilter();
41 
42  virtual void DetermineEnabled(GoogleString* disabled_reason);
43  virtual const char* Name() const { return "JsDeferDisabledFilter"; }
44 
45  static void InitStats(Statistics* statistics);
46  static void Terminate();
47 
50  static bool ShouldApply(RewriteDriver* driver);
51 
52  ScriptUsage GetScriptUsage() const override { return kWillInjectScripts; }
53 
54  private:
55  virtual void EndDocument();
56 
57  virtual void StartDocumentImpl() {}
58  virtual void StartElementImpl(HtmlElement* element) {}
59  virtual void EndElementImpl(HtmlElement* element) {}
60 
61  void InsertJsDeferCode();
62 
63 
64 };
65 
66 }
67 
68 #endif
Definition: js_defer_disabled_filter.h:37
Definition: common_filter.h:47
static bool ShouldApply(RewriteDriver *driver)
Definition: rewrite_driver.h:98